Inteliplug ProX Captive Drain Plug, Garboard Assembly, Sensor & Deutsch Plug PigtailThe Seaview Inteliplug ProX is a transom drain plug reimagined and engineered to be easy to use and impossible to lose. Features:ProX comes with a hermetically sealed aeronautical grade sensor with Deutsch plug pigtailErgonomic design so you don’t need toolsSpring-loaded captive cap (stays attached)A direct replacement for the bronze and stainless traditional style garboards (520040, 520042, 520060)Approved for all marine environments including saltwater.Manufactured from durable marine-grade ABS + 15% fiberNPT thread and a backup O-ring - watertight fit2" outer diameter - fits in the same spot as your current garboard drain plugEngineered transom gasket - no messy silicone needed3 large individual drain cavities - plenty of flow area